Method of producing well-holes, pole-holes, and the like.



O. WILHELMI. 1 METHOD OF PRODUCING WELL HOLES, POLE HOLES, AND THE LIKE.

APPLIOATION FILED JAN. 2, 1914.

Patented July 14, 191% Ill/I11 71/1!!!Il/II/Il/llll/l/IIAIIIll/II!!!IlllIlI/lI/lI/llIll/1141111!!!I! TED STATEE PATENT GFEIGE.

OTTO WILHELMI, OF LUGERNE, SWITZERLAND, ASSIGNOR 0F ONE-HALF TO THE FIRM OF INTERNATIONALE SIEG-WARTBALKEN-GESELLSCHAFT, OF LUCERNE, SWITZER- LAND.

METHOD OF PRODUCING WELL-HOLES, POLE-HOLES, AND THE LIKE.

Specification of Letters E'atent.

Patented July Ml, 191d.

Application filed January 2, 1914. Serial No. 810,019.

To all whom it may concern Be it known that I, Orro VVILHELMI, a subject of the German Emperor, and resident of Lucerne, Switzerland, have invented an improved and npvel Method of Producing VVell-Holes, Pole-Holes, and the like, of which the following is a specification To produce holes for wells, piles, poles, posts, and the like, either boring tools are employed which remove the earth from the bore hole (which, however, is deficient. in the case of producing holes for concrete poles or the like, because the round is not compressed below the pointed pile shoe), or driving tubes with a core passing through the interior of the tube and having a pointed lower end are made use 0f,-which afterward are drawn out of theground; if, perhaps, these tubes have been driven in without the core mentioned, the pile shoe is left behind within the ground. To ram driving tubes into rather resistible ground, very strong blows are necessary which can be attained only by a. heavy monkey and a great height of drop.

Experts know from experience that such mode of procedure requires heavy and expensive pile driving machines which entail great expenses for transport, erection, and working, and can not be employed upon any place in consequence of the dimensions of their base and the useful height necessary for certain heights of drop. If, however, a driving tube 1s rammed in by the mediation of a pile of plastic material, such as cement, linie-, loam-pulp, liquid concrete,

or a column of water or another liquid, the

pressure produced by the blow of the monkey is transmitted by hydrostatic action to the inner surfaceof the tube and to the ground below this latter, the height of thatpressure being the result of the height. ofthe column of liquid multiplied by its weight, or of the pressure exerted upon the column of liquid.

In order to make my invention more clear, I refer to the accompanying drawing, in which is represented a vertical section through the ground, a bore hole, a driving tube, and a monkey in connection with some other parts appertaining thereto.

If, for instance, the height of. the tube ground amounts to 5,000 kilograms multiplied by the weight of ,the column of liquid of 5 meters, thus: 25,000 kilograms; this pressure is exerted laterally upon the walls of the tube a and vertically upon the ground. To produce such a high pressure, a pile driver of the expensive kind above mentioned is required, whereas thatpressure may be produced in a very simple, cheap, and aseliicient manner by the means shown in the drawing, the more, as the tube a may serve at the same time as guide for the monkey c, the tube serving as a substitute for the guide posts provided at the pile driving machines.

Owing to the frictionllateral pressure) of the pressed contents of the tube, this latter is driven into the ground if the monkey is dropped; upon the mass in the tube, thus without. letting the monkey act directly upon the tube itself, whereby the known noisy and hard blows of the monkey are done away with.-

The three-legged boom shown may be used as support for the monkey rope pulley and for drawing out the tube afterward if such is required. The lower end of the tube may be appropriately shaped to facilitate its penetrating into the ground.

Having now described my invention. what I desire to secure by a patent of the United States is:

1. The method of producing holes for wells, piles, posts, and the like, consisting 

